提高相对论返波管效率和功率容量的粒子模拟研究  

Particle-in-Cell Simulation for Increasing the Efficiency and Power Capacity of Relativistic Backward Wave Oscillators

作　　者：肖仁珍 陈昌华 史彦超 杨德文 XIAO Ren-zhen;CHEN Chang-hua;SHI Yan-chao;YANG De-wen(Science and Technology on High Power Microwave Laboratory,Northwest Institute of Nuclear Technology,Xi'an 710024,China)

机构地区：[1]西北核技术研究院高功率微波重点实验室

出　　处：《真空电子技术》2019年第6期29-36,共8页Vacuum Electronics

摘　　要：本文综述了近10年来在提高相对论返波管效率和功率容量方面开展的系列粒子模拟研究工作。在提高效率方面,主要是采用非均匀慢波结构,增加调制腔、提取腔、预调制腔,采用局部非均匀磁场,在反射器内加脊,优化束波相互作用区前后的反射系数等。在提高功率容量方面,主要是采用TM021谐振反射器和提取腔,分布式能量提取,双模工作,组合模工作以及慢波结构局部优化等。This paper reviews a series of particle-in-cell simulations for increasing the efficiency and power capacity of relativistic backward wave oscillators.The measures for increasing the efficiency include using non-uniform slow wave structure(SWS),adding modulation cavity,extraction cavity and pre-modulation cavity,adopting local decompression magnetic field,adding a ridge in the reflector,and optimizing the reflection coefficient before and after the beam-wave interaction region.While the measures for increasing the power capacity include using TM 021 mode reflector and extraction cavity,using distributed energy extraction,dual-mode operation and combined-mode operation,and the modification of SWS profile,etc.

关 键 词：高功率微波 相对论返波管 效率 功率容量 粒子模拟 

分 类 号：O53[理学—等离子体物理]